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Finding the Fourth Proportional to 57,789.80, 86,684.70 and 49,063.40

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Solution

The fourth proportional to 57,789.80, 86,684.70 and 49,063.40 is: 73,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,789.80 : 86,684.70 = 49,063.40 : x
  2. Step 2: Convert to fraction form
    57,789.80/86,684.70 = 49,063.40/x
  3. Step 3: Cross multiply
    57,789.80x = 86,684.70 × 49,063.40
  4. Step 4: Simplify right side
    57,789.80x = 4,253,046,109.98
  5. Step 5: Solve for x
    x = 4,253,046,109.98/57,789.80
  6. Step 6: Final answer
    x = 73,595.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.